Saw this app mentioned on Mashable and gave it a try. I’m very impressed. It’s not just a good experience for flight search for a phone, it’s a good experience for flight search period. I used it to book my flights for WWDC, and I’d rather use this app on my 3.5-inch iPhone than most flight search websites on my full-size Mac display.

Hipmunk’s “agony” filter produces a seemingly ideal sort order. And their custom date picker is simply brilliant. Hipmunk has a good web interface too, but it has nothing on the iPhone interface. This is why native apps matter.